Based on your question, unfortunately the PriceCheck search results did not contain any listings specifically for SHELL 10W40 API SN/CF 5 LTR oil. The closest matches were the Helix HX7 and Helix HX8 oils that were listed. Both of these are fully synthetic oils from Helix, which is Shell's line of synthetic motor oils. The Helix HX7 10W-40 is available for R550 and would be a great option if you prefer a 10W-40 viscosity. Alternatively, the Helix HX8 5W-40 is listed for R658 and may offer slightly better fuel efficiency. Apologies I could not find the exact Shell product you asked about - as an experimental bot, I don't have access to every listing just yet. Let me know if you would like me to try searching for alternatives.
